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J. DESMOND.

STEAM INJBGTOR..

Patqnted May 28, 1889.-

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, J. DESMOND. STEAM INJBGTOR Patented May 28, 1889.

nua/VCO@ NV PETERS PhnoLithugrfpher. Wash NITED STATES PATENT nricn.

JOHN DESMOND, OF BROOKLYN, NEV YORK, ASSIGNOR TO rlHE HAYDEN du DERBY MANUFACTURING COMPANY, OF SAME PLACE.

STEAM-INJECTO'R.

SPECIFICATION forming part of Letters Patent No. 404,262, dated May 28, 1889.

Application filed March 30, 1889. Serial No. 305,404. (Model.)

To all whom, t may concern:

Be it known that I, JOHN DESMOND, a citizen of the United States of America, residing' at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Steam-Injectors, of which the following is a specification, reference being had therein to the accompanying d rawin gs.

This invention pertains to certain new and useful improvements in steam-inj ectors, having for its object, first, the production of an automatic injector comprising an overiiowchamber between thesuction and combining tubes and a sliding valve for presenting a continuousV opening or communication between the month of the combining-tube and the overflow-chamber during the working of the injector, and, secondly, the provision of means for regulating and controlling the supply of water to the injector, whereby the water-supply is not affected by any jarring to which the injector might be subjected.

In automatic injectors as heretofore const-ructed when the opening into the secondary overflow is once closed it so remains throughout the ent-ire working of the injector. Better results could be obtained if the communication between the combining-tube and the overflow-chamber were uninterrupted and made continuous during the Workin g of the injector. This desirable result I have attained, and to that end the invention comprises the details of construction, combination, and arrangement of parts, substantially as hereinafter l fully set forth.

In the accompanying` drawings, Figure l is a vertical longitudinal sectional view of my improved injector. Fig. 2 is a cross-sectional view thereof on the line ec 0c. Fig. 3 is an enlarged detail perspective view showing the sliding valve.

Referring to the drawings, A designates the casting or tubular casing provided with the steam-inlet arm a, the water-inlet arm a', the overflow arm or branch a2, and the delivery arm or extension-nozzle as, to each of which is connected the respective pipe connection. (Not shown.) The steam-inlet arm a is eX- tended into a chamber, B, over one end ofA 5o the casing, and into a circular extension, b, of the outer wall thereof is screwed a plug, b', through the center of which is passed the stem b2 of the steam-inlet valve O. To the outer end of this stem is loosely connected the vertical arm of a lever, D, the inner end of the right-angular portion of which is fulcrumed to an ear, (Z, of a ring or collar, d', disposed around the circular extension Z). This ring or collar is firmly clamped or held in place by the circular flange (Z2 of the plug b. By loosening said plug said ring or collar can be turned and rigidly held at the desired point so as to keep the lever-handle perpendicular in case the injector is inclined toward one side. Into a circular extension, e, .of the water-inlet arm a is screwed a plug, E, through which and a second smaller plug is passed the spindle c of a water-iiilet valve, F, located in the arm a.

The valve E consists of two circular heads or disks, ff, centrally threaded and fitted, respectively, on the right and left hand screwthreads, f f2, of the spindle e. Theseheads or disks ff are also fitted on or guided by a rod, f3, projecting from the plug E and extended through upper coincident apertures of said heads or disks. These heads or disks fit flush against the walls of the arm a', and their outer ends extend into the opposite protruding circular portions of the sides of said arm. By turning the spindle c it is obvious that the heads or disks comprising the valve will move away from or toward each other, according as they are being opened or closed. The water is thus permitted to iiow to or is cut off from the injector, and no matter how great the jarring (especially when the injector is used onlocomotives) these heads or disks will retain their same position.

To the spindle c is secured a iinger or pointer, f4, which travels over a scale, f5, on the iiange f of the plug E. This finger or pointer indicates the amount of water being forced into the boiler-1A'. c., the quantity for the passage of which the valve is adjusted.

The steam-inlet tube G projects to within a short distance of the lifting-tube II, which latter tube is provided with an inner widened end, and screwed into a wall, g, ot the caslng.

'lo the widened end of the combining-tube ll is secured one end ol` the delivery-tube I, the latter being held in place by the arm or extension-nozzle a. In the circular flange h ot' the combining-tube at the point of conjunction with the deliver -tnbe 'is 'formed a series of holes or openings, h, through which the spill or overflow passes into the overflowcliamber h2, wherein is formed an aperturcd wall, 7er, as shown.

J is a sliding valve designed to slide on the combining-tube Il. This valve has in one f'ace a conical recess or opening, j, and a series off small grooves or recesses', j', extending over the conical recess. This valve is designed to fit flush against the lifting-tube d iiriii the working of:l the inj ector, and against the circular flange 7i., covering the overflowholes 7i in the starting thereof and until a vacuum is formed, drawing it back to its normal position, after which a passage-way between the month of the combining-tube and the overflow-chainber is had through the grooves or recesses j', whereby the overflow from the holes 7L ot the combining-tube is drawn in through the said grooves or recesses, thereby establishing a continuons connection between the mouth ot the combining-tube and the overflow-cliamber and prevent such overflow from passing out through the over- `flow-valve.

An overflow-valve, l, rests upon the opening between the overflow-chaniber h2 and the arm or branch, and above it is located a lazycock, 711.

llie operation is as fellows: The steam upon. being admitted to the injector will pass thro ugh the steam-iii let and lifting-tubes, forcing the sliding valve J away from its position against said latter tube and driving the saine against the circular flange 71., and said steam passing out through the holes or ports 71. will raise the overfiow-valve K and pass into the outside atinosi'ihere, iiiiinediately upon which a vacniiin is formed in the water-siipply chamber, causing the lifting of? water thereinto and drawing the valve J back to its position against the lifi'ting-tiibe. The sliding' valve in thus passing through the apertured wall h3 will stop or cut oft the circulation ot' the overflow in the oif'erflowchamber, which momentary cessation orstoppage will eflect the establishment ol thejet or column, the vacuum drawing the water in the overflow-cliamber through the grooves or recesses off the sliding' valve on Vinto and through the tubes to the boiler. Simultaneous with the drawing of the valve J to its normal position against the lifting-tube the overflow-valve is firmly closed and seals the air-inlet. ',llie valve J being returned to its normal position when the column of: steam and 'water is established, a continuous passage-way between the mouth of the combining-tube and the overflow is had through the grooves or recesses j', whereby anyoverflow through the holes 7b is drawn in at the month of the conibiiiing-tube, thus enabling' water of' a greater degree of heat to be u sed than is capable by any injector as heretofore constructed.

In a steam-injector provided with a secondary overflow as heretofore constructed such overflow has been kept tightly closed dur ing the working of the injector; but practical use has demonstrated that far better results are attained by preserving a continuous passageway or communication between the combining-tube and the overflow-chaniber.

l claim as my invention" l. The herein -described improved automatic steam-injector having a continuons comnninication between the mouth ol' the combining-tube and the overflow-cliamber, said communication being less during the working of; the injector than in the startingI thereof', substantially as set forth.

2. A steam-injector having an overflowchamber and the lifting and combining tubes opening thereinto, and having a continuous passage-way or communication therewith, said communication being less during the working of the injector than in the starting thereof, as set forth.

3. As an improvement in steam-injectors having' the lifting and combining tubes, the grooved valve sliding on said combining-tube, whereby a continuous passage-way or communication is had between the month ot' said combining-tube and the overflow-clianiber, as stated.

et. As an improvement in steam-ing]eetors having an overflow-ch.amber and the lifting and combining tubes opening thereiiito, the sliding valve located at said opening o f the tubes, and having holes or ports lorining a continuous passage-way, substantially as set forth.

5. As an improvement in steam-inJectors having the overflow-chamber, the eonibiii ingtiibe having holes or ports at or near .its rear end, the sliding valve located on said coin-- bining-t'iibe for closing said holes or ports in the starting of the i njeetor, and having grooves orreeessesllor `forming a continuous passageway between the mouth oi said combiningtube and the overflow-chainber, substantially as set forth.

6. The herein-described improvement in steam-injectors, comprising the lifting and combining tubes, and the valve sliding on said combining-tube and having its normal position against said lifting-tube, as set f'ortln 7. As an improvement in steain-injectors having a water-inlet arm, the water-inlet valve located in said arm and having two heads or disks fitted on dissimilar screws, and the spindle carrying a iingeror pointer, substantially as set forth, said heads or disltsbeing movable in opposite i'lii'eetiiins, as statei'l.

tl. As an imprrjweinent in steiini-iiijecioi's,

IOO

the water-inlet valve having the two heads or disks, and the spindle provided with right and left hand screw-threads upon which said heads or ydisks are disposed, substantially as set forth.

9. As an iniproveinentvin steam-injectors, the Water-inlet valve having the two heads or disks, the spindle provided with opposite screw-threads, the plug through which said spindle is passed, and the guide-rod projecting from said plug through said heads or disks, substantially as set forth.

l0. In a steam-injector, the combination, with the water-inlet arm, of the valve having oppositely-lnovable heads or disks, the plug, the graduated scale, and the spindle having a linger or pointer, substantially as set forth.

l1. In a steam-injector, the co1nbination,-

with the water-inlet arm having the opposite circular extensions, of the plug having a flange provided with a scale, the heads or disks, the spindle having right and left hand screw-threads, the guide-rod projecting from said plug, and the finger or pointer, substantially as set forth.

In testimony whereof I ax my signature in presence of two witnesses.

JOHN DESMOND.

Witnesses:

J. NOTA MCGILL, WM. S. HoDGEs. 

